1、BRITISH STANDARD BS EN ISO 22777:2004 Footwear Test method for accessories: touch and close fasteners Peel strength before and after repeated closing The European Standard EN ISO 22777:2004 has the status of a British Standard ICS 61.060 BS EN ISO 22777:2004 This British Standard was published under
2、 the authority of the Standards Policy and Strategy Committee on 6 January 2005 BSI 6 January 2005 ISBN 0 580 45209 3 National foreword This British Standard is the official English language version of EN ISO 22777:2004. It is identical with ISO 22777:2004. The UK participation in its preparation wa
3、s entrusted to Technical Committee TCI/69, Footwear and leather, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred
4、to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions
5、 of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or p
6、roposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, pages 2 to 12, an inside back cover and a back cover.
7、The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO22777 December2004 ICS61.060 Englishversion FootwearTestmethodsforaccessories:touchandclose f
8、astenersPeelstrengthbeforeandafterrepeatedclosing(ISO 22777:2004) ChaussuresMthodesdessaipouraccessoires: fermeturesautoagrippantesRsistanceaupelageavant etaprsunusagerpt(ISO22777:2004) SchuhePrfverfahrenfrZubehr:Haftverschlsse AbziehfestigkeitvorundnachwiederholtemSchlieen(ISO 22777:2004) ThisEurop
9、eanStandardwasapprovedbyCENon23August2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtained
10、onapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. C
11、ENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITT
12、EEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO22777:2004:EEN ISO 22777:2004 (E) 2 Contents Page Foreword3 1 Scope 4
13、2 Normative references 4 3 Terms and definitions .4 4 Principle4 4.1 Peel strength 4 4.2 Peel strength after repeated opening and closing.4 5 Apparatus .5 5.1 A tensile testing machine complying with the requirements of EN ISO 7500-1 to an accuracy corresponding to class 2, and with the following: 5
14、 6 Test specimens7 7 Conditioning.8 8 Procedure .9 9 Calculation and expression of results.10 10 Test report 11 Annex ZA (normative) Normative references to International publications with their corresponding European publications12 EN ISO 22777:2004 (E) 3Foreword This document (EN ISO 22777:2004) h
15、as been prepared by Technical Committee CEN/TC 309 “Footwear“, the secretariat of which is held by AENOR, in collaboration with Technical Committee ISO/TC 216 “Footwear“. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorse
16、ment, at the latest by June 2005, and conflicting national standards shall be withdrawn at the latest by June 2005. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cypr
17、us, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN ISO 22777:2004 (E) 4 1 Scope This document spec
18、ifies a test method for determining the peel strength of touch and close fasteners before and after repeated use. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated refere
19、nces, the latest edition of the referenced document (including any amendments) applies. EN 12222, Footwear - Standard atmospheres for conditioning and testing of footwear and components for footwear EN 12240, Touch and close fasteners Determination of the overall and effective widths of tapes and th
20、e effective width of a closure EN ISO 7500-1, Metallic materials Verification of static uniaxial testing machines Part 1: Tension/compression testing machines Verification and calibration of the force-measuring system (ISO 7500-1:2004) 3 Terms and definitions For the purposes of this document, the f
21、ollowing terms and definitions apply. 3.1 peel strength force per unit effective width required to separate the two tapes forming the specified closure from an open edge under the specified conditions of test 3.2 effective width width of the pile at 90 to the length of the tape and which does not in
22、clude the selvedge 4 Principle 4.1 Peel strength Both parts of a touch and close fastener are pressed together under controlled conditions, and the average force required to peel them apart along their length from either end is measured with a tensile testing machine. This procedure is then repeated
23、 with one of the parts of the fastener turned through 180. 4.2 Peel strength after repeated opening and closing A touch and close fastener is repeatedly opened and closed a standard number of times by a machine. The peel strength is then measured by repeating the test described in 4.1. EN ISO 22777:
24、2004 (E) 5 5 Apparatus 5.1 A tensile testing machine complying with the requirements of EN ISO 7500-1 to an accuracy corresponding to class 2, and with the following: 5.1.1 A jaw separation rate of 100 mm/min 10 mm/min. 5.1.2 The means of producing a continuous record of force throughout the test. 5
25、.2 A roller device with a roller (see Figure 1) of diameter 100 mm 5 mm capable of applying a force of 1,0 N 0,1 N per millimetre width of the test specimen. This is to close the fastener under a standard pressure. 5.3 Fork with a handle (see Figure 2) which engages the roller (5.2) and allows it to
26、 be moved without any extra down force being applied (see Figure 3). Dimensions in mm Figure 1 Roller EN ISO 22777:2004 (E) 6 Dimensions in mm Key 1 Handle 2 Forks 3 Space between the forks to be 2 mm greater than the roller width Figure 2 Fork with a handle Figure 3 Rolling mechanism for touch and
27、close fasteners EN ISO 22777:2004 (E) 7 5.4 A touch and close cycling machine (see Figure 4) with: 5.4.1 Two circular drums of minimum width 70 mm, one of diameter 160,0 mm 0,5 mm and the other diameter 162,5 mm 0,5 mm. Each drum has a single slot of length 55 mm 2 mm across its width to hold the fr
28、ee ends of the specimen fastener. The drums are mounted next to each other with their axes parallel. 5.4.2 A means of rotating the smaller of the two drums at a rate of 60 rev/min 5 rev/min with the direction of rotation being reversed every 30 s 5 s. The larger of the two drums rotates freely and i
29、s driven by physical contact with the smaller drum via the test specimen. 5.4.3 A means of applying a force of 1,0 N 0,1 N between the two drums for every 1 mm width of the test specimen. 5.4.4 A method of counting the total number of rotations of the smaller of the two drums regardless of the direc
30、tion of rotation. Key 1 Idling drum (diameter 162,5 mm 0,5 mm) 2 Hook tape 3 Driven drum (diameter 160 mm 0,5 mm) 4 Loop tape F Force between drums = 1 N for every millimetre of effective width of fastener X Drum Figure 4 Touch and close fastener cycling machine 6 Test specimens 6.1 Peel strength 6.
31、1.1 Cut one piece of minimum length 420 mm from both the hook and loop tapes. EN ISO 22777:2004 (E) 8 6.1.2 Mark on the reverse side of each piece of tape four lines at 100 mm 5mm intervals from one end, as shown in Figure 5, to define the four test specimens. 6.1.3 Mark one end of each test specime
32、n with a “1” and the other end with a “2” as shown in Figure 5. 6.1.4 Separate the four test specimens by cutting along the lines drawn in 6.1.2. 6.2 Peel strength after repeated opening and closing 6.2.1 Cut one piece of length 540 mm 10 mm from both the hook and loop tapes. 6.2.2 Mark four test sp
33、ecimens, each of length 100 mm 5 mm on the central portion of both tapes. 6.2.3 Mark each 100 mm test specimen section with a “1” at one end and a “2” at the other (see Figure 5). Do not cut the test specimens out at this stage. Key A Hook tape B Loop tape C Spare tape X Specimen Figure 5 Marking an
34、d cutting of test specimens 7 Conditioning The test specimens shall be conditioned in accordance with the standard atmosphere specified in EN 12222 for a minimum of 24 h prior to the test. The closing of the test specimens and the testing shall also take place under these conditions. EN ISO 22777:20
35、04 (E) 9 8 Procedure 8.1 Peel strength 8.1.1 Measure the effective width (3.2) of both a hook and loop tapes (see 6.1.1), according to EN 12240, to an accuracy of 0,5 mm and use the smaller of these two values as the width of all the assembled fasteners. 8.1.2 Place four test specimens (see 6.1.4) c
36、ut from the loop tape on a flat surface with the pile uppermost. 8.1.3 Gently place one of the test specimens cut from the hook tape on top of each of the loop test specimens (see Figure 6), so that: Two of the fasteners are assembled so that the ends marked “1” (see 6.1.3) on both the hook and loop
37、 specimens coincide: Type A assembly. Two of the fasteners are assembled so that the end marked “1” on the hook test specimen coincides with the end marked “2” (see 6.1.3) on the loop test specimen: Type B assembly. 8.1.4 Consolidation of fasteners: 8.1.4.1 Adjust the roller device (5.2) to produce
38、a force, in N, numerically equal to, or within 1 N of the effective width of the fastener, in mm, as measured in 8.1.1. 8.1.4.2 Take the assembled fastener (see 8.1.3) and traverse the full length of it with the roller device (5.2). 8.1.4.3 Turn the fastener over and repeat the procedure in 8.1.4.2.
39、 8.1.4.4 Repeat the procedure in 8.1.4.2 and 8.1.4.3 a further four times so that the fastener has been transversed by the roller a total of ten times. 8.1.5 Partly peel open one type A and one type B assembly (see 8.1.3) from the end where the hook tape is marked 1. Partly peel the remaining type A
40、 and type B assembly from the end where the hook tape is marked 2, (see Figure 6). In all cases take care not to peel more than 40 mm of the fastened length. 8.1.6 Take an assembly and clamp one of its free separated ends into each of the jaws of the tensile testing machine (5.1.1) ensuring that the
41、 longer edges of the specimen fastener are parallel to the axis of the machine. 8.1.7 Turn on the recording system of the tensile testing machine. 8.1.8 Operate the tensile testing machine with a jaw separation rate of 100 mm/min 10 mm/min until at least 50 mm of the fastened length has been separat
42、ed. 8.1.9 Turn off the recording system (5.1.3). 8.1.10 Repeat the procedure in 8.1.6 to 8.1.9 for the other three assemblies. 8.1.11 Repeat the procedure in 8.1.2 to 8.1.10 a further two times using the same pieces of tape to produce a total of twelve results, three for each of the four test config
43、urations shown in Figure 6. 8.1.12 For each of the twelve graphs of force versus jaw separation produced by the recording system determine the average peeling force, in N. NOTE The mean peeling force can be estimated by visually comparing areas on the force versus extension graph. When a horizontal
44、line is drawn at the average peeling force, the area bounded by the line and the portion of the force versus extension curve above the line will be equal to the area bounded by the line and the portions of the curve below the line. EN ISO 22777:2004 (E) 10 Key * Start peel from this end A Type A B T
45、ype B C Loop tape D Hook tape Figure 6 Peel configurations 8.2 Peel strength after repeated opening and closing 8.2.1 Measure the effective width of the fasteners by using the procedure in 8.1.1. 8.2.2 Attach the length of loop tape (6.2.1) round the circumference of the smaller drum (5.4.1) so that
46、 its backing surface is against the drum. Tuck the free ends of the tape into the slot in the drum. 8.2.3 Attach the length of hook tape (6.2.1) round the circumference of the larger drum (5.4.1) so that its backing surface is against the drum. Tuck the free ends of the tape into the slot in the dru
47、m. 8.2.4 Bring the two drums together so that the hook and loop tapes are in contact with each other, and apply a force, in N, between the drums which is numerically equal to, or within 1 N of the effective width of the fastener, in mm. 8.2.5 Rotate the smaller drum at a speed of 60 rev/min 5 rev/mi
48、n for 5 000 revolutions. 8.2.6 Remove both the hook and loop tapes from the drums and cut each tape into four test specimens as shown in Figure 5. 8.2.7 Carry out the procedure in 8.1.2 to 8.1.12 to assess the peel strength of the fasteners after repeated opening and closing. 9 Calculation and expression of results 9.1 Peel strength 9.1.1 Divide each of the twelve average peeling forces, in N, determined in 8.1.12 by the width of the fastener measured in 8.1.1 to give the aver
